Add lock files for package management and update architecture documentation

- Introduced bun.lock and package-lock.json to manage dependencies for the project.
- Enhanced backend API architecture documentation with additional security and documentation guidelines.
- Made minor formatting adjustments across various files for consistency and clarity.

backend-api/src/services/ClientService.ts

@@ -45,8 +45,8 @@ export class ClientService {
       address: data.address,
       notes: data.notes,
       user: {
-        connect: {id: userId},
-      },
+        connect: {id: userId}
+      }
     });
   }